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y-5 = (-7/4)*(x+3) // - (-7/4)*(x+3)
y-((-7/4)*(x+3))-5 = 0
(7/4)*(x+3)+y-5 = 0
7/4*(x+3)+y-5 = 0
7/4*(x+3)+y-5 = 0
7/4*x+y-5+21/4 = 0
7/4*x+y+1/4 = 0
7/4*x+y+1/4 = 0
7/4*x+y+1/4 = 0 // - y+1/4
7/4*x = -(y+1/4) // : 7/4
x = (-(y+1/4))/7/4
x = -4/7*(y+1/4)
x = -4/7*(y+1/4)
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